Many thanks for your response - it is greatly appreciated.
Yep, my H80 has the ridged hose, and I had a feeling that those may need replacing so no issues there.
I would be looking at re-using the CPU waterblock from the H80, as I really need the combined block and pump unit to save space. I am aware that the Cooler Master Eisberg CPU block can be purchased as an individual component, which might be a better part than the Corsair block, but I think that it's height might become an issue. Are there any other combined block/pump assemblies that you are aware of that can be purchased as an individual item? If there is anything that would be better than the H80 block, and lower profile then the Eisberg, I'm all ears!
I'll have a look at the Nemesis radiators as you suggest.
Thanks again for your time - you have been very helpful.
ps - Will you be stocking the Mayhem nano fluid?